In Croatia, Grossmann families are Croats (from Pula ).
Prevalence
Only a few people with faimily name Grossmann live in Croatia today, in one household only. They are located in one Croatian city only, in Pula (<5).
Outside Croatia
Family name Grossmann is present in 66 countries worldwide. The family name "Grossmann " is used by some 20000 people in Germany , about 3000 in the United States , and some 3000 people in Brazil.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.